diff --git a/apps/visualizer/src/App.tsx b/apps/visualizer/src/App.tsx
index 5e529b3..38f842f 100644
--- a/apps/visualizer/src/App.tsx
+++ b/apps/visualizer/src/App.tsx
@@ -1,3 +1,4 @@
+import type { CSSProperties } from 'react';
 import { useEffect, useMemo, useState } from 'react';
 import { useLocalStorageState } from './app/hooks/useLocalStorageState';
 import AppShell from './layout/AppShell';
@@ -11,6 +12,11 @@ import Button from './ui/Button';
 import TopNav from './layout/TopNav';
 import AuthStatus from './layout/AuthStatus';
 import LoginScreen from './layout/LoginScreen';
+import { useDlobStats } from './features/market/useDlobStats';
+import { useDlobL2 } from './features/market/useDlobL2';
+import { useDlobSlippage } from './features/market/useDlobSlippage';
+import { useDlobDepthBands } from './features/market/useDlobDepthBands';
+import DlobDashboard from './features/market/DlobDashboard';
 
 function envNumber(name: string, fallback: number): number {
   const v = (import.meta as any).env?.[name];
@@ -36,6 +42,11 @@ function formatQty(v: number | null | undefined, decimals: number): string {
   return v.toLocaleString(undefined, { minimumFractionDigits: decimals, maximumFractionDigits: decimals });
 }
 
+function orderbookBarStyle(scale: number): CSSProperties {
+  const s = Number.isFinite(scale) && scale > 0 ? Math.min(1, scale) : 0;
+  return { ['--ob-bar-scale' as any]: s } as CSSProperties;
+}
+
 type WhoamiResponse = {
   ok?: boolean;
   user?: string | null;
@@ -99,9 +110,9 @@ export default function App() {
 }
 
 function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
-  const markets = useMemo(() => ['PUMP-PERP', 'SOL-PERP', 'BTC-PERP', 'ETH-PERP'], []);
+  const markets = useMemo(() => ['PUMP-PERP', 'SOL-PERP', '1MBONK-PERP', 'BTC-PERP', 'ETH-PERP'], []);
 
-  const [symbol, setSymbol] = useLocalStorageState('trade.symbol', envString('VITE_SYMBOL', 'PUMP-PERP'));
+  const [symbol, setSymbol] = useLocalStorageState('trade.symbol', envString('VITE_SYMBOL', 'SOL-PERP'));
   const [source, setSource] = useLocalStorageState('trade.source', envString('VITE_SOURCE', ''));
   const [tf, setTf] = useLocalStorageState('trade.tf', envString('VITE_TF', '1m'));
   const [pollMs, setPollMs] = useLocalStorageState('trade.pollMs', envNumber('VITE_POLL_MS', 1000));
@@ -110,7 +121,7 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
   const [showBuild, setShowBuild] = useLocalStorageState('trade.showBuild', false);
   const [tab, setTab] = useLocalStorageState<'orderbook' | 'trades'>('trade.sidebarTab', 'orderbook');
   const [bottomTab, setBottomTab] = useLocalStorageState<
-    'positions' | 'orders' | 'balances' | 'orderHistory' | 'positionHistory'
+    'dlob' | 'positions' | 'orders' | 'balances' | 'orderHistory' | 'positionHistory'
   >('trade.bottomTab', 'positions');
   const [tradeSide, setTradeSide] = useLocalStorageState<'long' | 'short'>('trade.form.side', 'long');
   const [tradeOrderType, setTradeOrderType] = useLocalStorageState<'market' | 'limit' | 'other'>(
@@ -120,6 +131,16 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
   const [tradePrice, setTradePrice] = useLocalStorageState<number>('trade.form.price', 0);
   const [tradeSize, setTradeSize] = useLocalStorageState<number>('trade.form.size', 0.1);
 
+  useEffect(() => {
+    if (symbol === 'BONK-PERP') {
+      setSymbol('1MBONK-PERP');
+      return;
+    }
+    if (!markets.includes(symbol)) {
+      setSymbol('SOL-PERP');
+    }
+  }, [markets, setSymbol, symbol]);
+
   const { candles, indicators, meta, loading, error, refresh } = useChartData({
     symbol,
     source: source.trim() ? source : undefined,
@@ -128,12 +149,18 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
     pollMs,
   });
 
+  const { stats: dlob, connected: dlobConnected, error: dlobError } = useDlobStats(symbol);
+  const { l2: dlobL2, connected: dlobL2Connected, error: dlobL2Error } = useDlobL2(symbol, { levels: 14 });
+  const { rows: slippageRows, connected: slippageConnected, error: slippageError } = useDlobSlippage(symbol);
+  const { rows: depthBands, connected: depthBandsConnected, error: depthBandsError } = useDlobDepthBands(symbol);
+
   const latest = candles.length ? candles[candles.length - 1] : null;
   const first = candles.length ? candles[0] : null;
   const changePct =
     first && latest && first.close > 0 ? ((latest.close - first.close) / first.close) * 100 : null;
 
   const orderbook = useMemo(() => {
+    if (dlobL2) return { asks: dlobL2.asks, bids: dlobL2.bids, mid: dlobL2.mid as number | null };
     if (!latest) return { asks: [], bids: [], mid: null as number | null };
     const mid = latest.close;
     const step = Math.max(mid * 0.00018, 0.0001);
@@ -164,7 +191,19 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
     });
 
     return { asks, bids, mid };
-  }, [latest]);
+  }, [dlobL2, latest]);
+
+  const maxAskTotal = useMemo(() => {
+    let max = 0;
+    for (const r of orderbook.asks) max = Math.max(max, r.total || 0);
+    return max;
+  }, [orderbook.asks]);
+
+  const maxBidTotal = useMemo(() => {
+    let max = 0;
+    for (const r of orderbook.bids) max = Math.max(max, r.total || 0);
+    return max;
+  }, [orderbook.bids]);
 
   const trades = useMemo(() => {
     const slice = candles.slice(-24).reverse();
@@ -184,6 +223,24 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
     return latest?.close ?? tradePrice;
   }, [latest?.close, tradeOrderType, tradePrice]);
 
+  const orderValueUsd = useMemo(() => {
+    if (!Number.isFinite(tradeSize) || tradeSize <= 0) return null;
+    if (!Number.isFinite(effectiveTradePrice) || effectiveTradePrice <= 0) return null;
+    const v = effectiveTradePrice * tradeSize;
+    return Number.isFinite(v) && v > 0 ? v : null;
+  }, [effectiveTradePrice, tradeSize]);
+
+  const dynamicSlippage = useMemo(() => {
+    if (orderValueUsd == null) return null;
+    const side = tradeSide === 'short' ? 'sell' : 'buy';
+    const rows = slippageRows.filter((r) => r.side === side).slice();
+    rows.sort((a, b) => a.sizeUsd - b.sizeUsd);
+    if (!rows.length) return null;
+    const biggest = rows[rows.length - 1];
+    const match = rows.find((r) => r.sizeUsd >= orderValueUsd) || biggest;
+    return match;
+  }, [orderValueUsd, slippageRows, tradeSide]);
+
   const topItems = useMemo(
     () => [
       { key: 'BTC', label: 'BTC', changePct: 1.28, active: false },
@@ -209,12 +266,28 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
           ),
       },
       { key: 'oracle', label: 'Oracle', value: formatUsd(latest?.oracle ?? null) },
-      { key: 'funding', label: 'Funding / 24h', value: '—', sub: '—' },
-      { key: 'oi', label: 'Open Interest', value: '—' },
-      { key: 'vol', label: '24h Volume', value: '—' },
-      { key: 'details', label: 'Market Details', value: <a href="#">View</a> },
+      { key: 'bid', label: 'Bid', value: formatUsd(dlob?.bestBid ?? null) },
+      { key: 'ask', label: 'Ask', value: formatUsd(dlob?.bestAsk ?? null) },
+      {
+        key: 'spread',
+        label: 'Spread',
+        value: dlob?.spreadBps == null ? '—' : `${dlob.spreadBps.toFixed(1)} bps`,
+        sub: formatUsd(dlob?.spreadAbs ?? null),
+      },
+      {
+        key: 'dlob',
+        label: 'DLOB',
+        value: dlobConnected ? 'live' : '—',
+        sub: dlobError ? <span className="neg">{dlobError}</span> : dlob?.updatedAt || '—',
+      },
+      {
+        key: 'l2',
+        label: 'L2',
+        value: dlobL2Connected ? 'live' : '—',
+        sub: dlobL2Error ? <span className="neg">{dlobL2Error}</span> : dlobL2?.updatedAt || '—',
+      },
     ];
-  }, [latest?.close, latest?.oracle, changePct]);
+  }, [latest?.close, latest?.oracle, changePct, dlob, dlobConnected, dlobError, dlobL2, dlobL2Connected, dlobL2Error]);
 
   const seriesLabel = useMemo(() => `Candles: Mark (oracle overlay)`, []);
   const seriesKey = useMemo(() => `${symbol}|${source}|${tf}`, [symbol, source, tf]);
@@ -292,11 +365,30 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
             showBuild={showBuild}
             onToggleBuild={() => setShowBuild((v) => !v)}
             seriesLabel={seriesLabel}
+            dlobQuotes={{ bid: dlob?.bestBid ?? null, ask: dlob?.bestAsk ?? null, mid: dlob?.mid ?? null }}
           />
 
           <Card className="bottomCard">
             <Tabs
               items={[
+                {
+                  id: 'dlob',
+                  label: 'DLOB',
+                  content: (
+                    <DlobDashboard
+                      market={symbol}
+                      stats={dlob}
+                      statsConnected={dlobConnected}
+                      statsError={dlobError}
+                      depthBands={depthBands}
+                      depthBandsConnected={depthBandsConnected}
+                      depthBandsError={depthBandsError}
+                      slippageRows={slippageRows}
+                      slippageConnected={slippageConnected}
+                      slippageError={slippageError}
+                    />
+                  ),
+                },
                 { id: 'positions', label: 'Positions', content: <div className="placeholder">Positions (next)</div> },
                 { id: 'orders', label: 'Orders', content: <div className="placeholder">Orders (next)</div> },
                 { id: 'balances', label: 'Balances', content: <div className="placeholder">Balances (next)</div> },
@@ -323,7 +415,7 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
           title={
             <div className="sideHead">
               <div className="sideHead__title">Orderbook</div>
-              <div className="sideHead__subtitle">{loading ? 'loading…' : latest ? formatUsd(latest.close) : '—'}</div>
+              <div className="sideHead__subtitle">{loading ? 'loading…' : orderbook.mid != null ? formatUsd(orderbook.mid) : latest ? formatUsd(latest.close) : '—'}</div>
             </div>
           }
         >
@@ -341,18 +433,26 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
                     </div>
                     <div className="orderbook__rows">
                       {orderbook.asks.map((r) => (
-                        <div key={`a-${r.price}`} className="orderbookRow orderbookRow--ask">
+                        <div
+                          key={`a-${r.price}`}
+                          className="orderbookRow orderbookRow--ask"
+                          style={orderbookBarStyle(maxAskTotal > 0 ? r.total / maxAskTotal : 0)}
+                        >
                           <span className="orderbookRow__price">{formatQty(r.price, 3)}</span>
                           <span className="orderbookRow__num">{formatQty(r.size, 2)}</span>
                           <span className="orderbookRow__num">{formatQty(r.total, 2)}</span>
                         </div>
                       ))}
                       <div className="orderbookMid">
-                        <span className="orderbookMid__price">{latest ? formatQty(latest.close, 3) : '—'}</span>
+                        <span className="orderbookMid__price">{formatQty(orderbook.mid, 3)}</span>
                         <span className="orderbookMid__label">mid</span>
                       </div>
                       {orderbook.bids.map((r) => (
-                        <div key={`b-${r.price}`} className="orderbookRow orderbookRow--bid">
+                        <div
+                          key={`b-${r.price}`}
+                          className="orderbookRow orderbookRow--bid"
+                          style={orderbookBarStyle(maxBidTotal > 0 ? r.total / maxBidTotal : 0)}
+                        >
                           <span className="orderbookRow__price">{formatQty(r.price, 3)}</span>
                           <span className="orderbookRow__num">{formatQty(r.size, 2)}</span>
                           <span className="orderbookRow__num">{formatQty(r.total, 2)}</span>
@@ -487,7 +587,27 @@ function TradeApp({ user, onLogout }: { user: string; onLogout: () => void }) {
               </div>
               <div className="tradeMeta__row">
                 <span className="tradeMeta__label">Slippage (Dynamic)</span>
-                <span className="tradeMeta__value">—</span>
+                <span className="tradeMeta__value">
+                  {slippageError ? (
+                    <span className="neg">{slippageError}</span>
+                  ) : dynamicSlippage?.impactBps == null ? (
+                    slippageConnected ? (
+                      '—'
+                    ) : (
+                      'offline'
+                    )
+                  ) : (
+                    <>
+                      {dynamicSlippage.impactBps.toFixed(1)} bps{' '}
+                      <span className="muted">
+                        ({dynamicSlippage.sizeUsd.toLocaleString()} USD)
+                        {dynamicSlippage.fillPct != null && dynamicSlippage.fillPct < 99.9
+                          ? `, ${dynamicSlippage.fillPct.toFixed(0)}% fill`
+                          : ''}
+                      </span>
+                    </>
+                  )}
+                </span>
               </div>
               <div className="tradeMeta__row">
                 <span className="tradeMeta__label">Margin Required</span>